Improvement in connecting rotary polishing-tools to their shafts



H. F. WHEELER.

Improvement in Connecting Rotary Polishing-Tools to their Shafts.

No. 131,140, Patented Sep. 3,1872.

UNITED STATES PATENT OFFICE.

HENRY I WHEELER, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN CONNECTING ROTARY POLISHING-TOOLS TO THEI R SHAFTS.

Specification forming part of Letters Patent No. 131,140, datedSeptember 3, 1872.

' tween the two, by which the said stem is drawn and held immovablywithin its seat in the shaft,

substantially as hereinafter explained.

The drawing accompanying this specification represents at A acylindrical shaft such as is employed in machinery for setting the edgesof boot and shoe soles, the outer end of such shaft being formed with anaxial bore or socket, a, to receive the stem 1) of a setting-tool, c, amale screw, d, being out upon the periphery of the shaft and surroundingthe socket, upon which is screwed a sleeve, 6, whose outer surface ispreferably milled to enable it to be the more easily rotated. The mouthof the socket a is flaring to produce a tapering seat, f, such taperingseat being devised to receive an annular conical rib or collar, 9, whichis formed upon the stem of the setting-tool. The sleeve c has an annularlip, h, projecting inwardly toward the axis of the shaft A, the bore ofsuch lip being of considerably less diameter than the periphery of thecollar 9 in order to embrace the latter, while both sleeve and col larare formed with segmental notches to enable the latter to enter and.pass through the former. The coupling-connection between the shaft A,sleeve 6, and collar 9 is substantially the same as that shown in theordinary firehose coupling, with this important and noticeabledifference, that while in such hose-coup= lings the sleeve is stationarywith respect to the shaft, or the female portion or socket of thecoupling, and has no tapering seat,in mine it is movable and screws uponor about the socket.

In this manner I am enabled to produce a joint or means of connectionbetween a burnishing-tool and its shaft which, while being instantlyavailable, is perfectly rigid and tight, owing to the tapering seat andthe movable sleeve, and is unaffected by the jars and thrusts to whichthe tool is subjected.

I prefer to place in the bottom of the socket a a spring, i, to aid ineasily removing the setting-tool, and I also prefer to employ a suitablestop-pin, 7c, affixed to the end of the shaft A and extending into oneof the sectoral notches of the sleeve 6, in order that only therequisite extent of rotation of the latter shall take place, and toprevent its misplacement or loss.

My invention is applicable to many purposes other than the specialapplication herein shown.

Claim.

I claim- The hereindescribed couplingconnection, consisting of the shaftA, sleeve 0, and stem b, when the former is formed withthe taperingseat, the sleeve with the notched lip h, and screwing upon the shaft, asstated, and the stem with the conical notched collar or rib g, thespring't' and stop-pin It being employed as auxiliaries to the former,the whole being organized and operating substantially as shown andexplained.

HENRY F. \VHEELEB.

Witnesses:

F. CURTIS, W. E. BOARDMAN.

